Nitrogen in the Tires

"'Key" wrote in message

> "Bob Drake" wrote in message
>
>> Last week I finally got around to getting nitrogen in my tires for
>> the C-5 with Michelin ZP run flats. Cost $18. With air, the tire
>> pressure would go up about 5 lbs. on hot roads. Nitrogen keeps
>> pressure constant (does not expand as much) and has larger
>> molecules so it can't leak through the sidewalls over time.
>>
>> Bob "BLUE C5" Virginia
>
> tire pressure has always gone up about 5 lbs. on hot roads.
> hasn't damaged a tire yet.
> for an $18.00 savings.
> I don't mind checking my tires once a month or so.
> (needs to be done anyway)
>
> sounds to me like an over priced poser product
>
> my2¢
> --
> 'Key
> =====
>
Pressure change of about 1 PSI can be expected with a 10° temperature
change using normal compressed air. Mostly because of the moisture in
the compressed air. I've never seen more than a 3° change in a day of
travel on roads of any temperature. Might be because I use my own
compressed air with a drier on it for painting. For just the fact that
you don't have moisture in a tire inflated with nitrogen to check
corrosion of the aluminum rims makes it a plus. I would also like the
consistency of them filled with nitrogen but it's way to inconvenient
to go get it done, maybe some day.

Never head of the sidewalls leaking and seldom have air loss when my
cars sit for an extended period of time, just on the '64 knockoff
rims. That has stopped since I junked the 10 year old tires and
cleaned up the corrosion on the rim beads.

--
Dad
05 C6 Silver/Red 6spd Z51
72 Shark Black/Black/4spd
64 Red/red/white top/4spd
 >> Stay informed about: Nitrogen in the Tires 

In article ,
"Bob Drake" wrote:

> Last week I finally got around to getting nitrogen in my tires for the C-5
> with Michelin ZP run flats. Cost $18. With air, the tire pressure would go
> up about 5 lbs. on hot roads. Nitrogen keeps pressure constant (does not
> expand as much) and has larger molecules so it can't leak through the
> sidewalls over time.
>
> Bob "BLUE C5" Virginia

Thanks for the posting. I did not know that! Never really understood why
the new Wall Mart here says we use Nitrogen. I failed to read the fine
print if it was at extra cost or free like air
 >> Stay informed about: Nitrogen in the Tires 

Bob Drake wrote:

> Last week I finally got around to getting nitrogen in my tires for the
> C-5 with Michelin ZP run flats. Cost $18. With air, the tire pressure
> would go up about 5 lbs. on hot roads. Nitrogen keeps pressure
> constant (does not expand as much) and has larger molecules so it
> can't leak through the sidewalls over time.
>
> Bob "BLUE C5" Virginia

I've see advertisments around that tout
"Save $200 a Year" from "Increased Mileage"

--
Ric Seyler
Online Racing: RicSeyler
GPL Handicap 6.35
ricseyler.TakeThisOut@SPAMgulf.net
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remove –SPAM- from email address
--------------------------------------
"Homer no function beer well without."
- H.J. Simpson
 >> Stay informed about: Nitrogen in the Tires 

It's the ride, handling & corrosion - not tire damage. I'm surprised you
are concerned about $18 on a $60,000 car.

"'Key" wrote in message

> "Bob Drake" wrote in message
>
>> Last week I finally got around to getting nitrogen in my tires for the
>> C-5 with Michelin ZP run flats. Cost $18. With air, the tire pressure
>> would go up about 5 lbs. on hot roads. Nitrogen keeps pressure constant
>> (does not expand as much) and has larger molecules so it can't leak
>> through the sidewalls over time.
>>
>> Bob "BLUE C5" Virginia
>
> tire pressure has always gone up about 5 lbs. on hot roads.
> hasn't damaged a tire yet.
> for an $18.00 savings.
> I don't mind checking my tires once a month or so.
> (needs to be done anyway)
>
> sounds to me like an over priced poser product
>
> my2¢
> --
> 'Key
> =====
>
>
 >> Stay informed about: Nitrogen in the Tires 

On or about Wed, 04 Jun 2008 12:49:57 GMT, "Bob Drake"
wrote or did cause to be written:

>Last week I finally got around to getting nitrogen in my tires for the C-5
>with Michelin ZP run flats. Cost $18. With air, the tire pressure would go
>up about 5 lbs. on hot roads. Nitrogen keeps pressure constant (does not
>expand as much) and has larger molecules so it can't leak through the
>sidewalls over time.
>
>Bob "BLUE C5" Virginia
For $18 I've got some magnets you could put on your gas line and get
200mpg. Or you could make a down payment on a hydrogen generator that
will turn 1/2 a cup of water into an extra 25mpg per tank. Nitrogen is
just another version of these same scams.

Water is the culprit, not the other 22% oxygen and misc. gasses. Water
expands 1100 times going from liquid to vapor. If you just compress
normal air in the summer you are going to get some liquid droplets.
Put those into a tire and as the tire warms some of that liquid turns
to vapor and the pressure rises. But nitrogen expands exactly the same
as dry air. Neither nitrogen nor dry air leaks any significant amount
through a well maintained tire. By the time you have a leak it doesn't
really matter what the gas leaking is, the hole is large enough for
anything to leak.

I fill my tires in the winter when the air is dry. When summer comes I
let a little out to maintain the recommended cold pressure. If I ever
do need to add air to a tire I make sure I blow some air through the
hose first to remove the easy to remove moisture. My pressure varies a
couple of pounds from cold to warm the same way yours does but I have
$18 dollars in my pocket who's extra weight slows me down so all other
things being equal, you probably have the faster car.
 >> Stay informed about: Nitrogen in the Tires 

"Bob Drake" wrote in message

> It's the ride, handling & corrosion - not tire damage.

agree thats what you said
but
what I said was:
gaining an extra 5 lbs. on hot roads
hasn't damaged a tire yet.
least not on my car....
I also havent kept tires long enough for "corrosion" to be a
problem...

> I'm surprised you are concerned about $18 on a $60,000
> car.

I don't have a $60K car but if I did?
I would still think nirtogen is "an over priced poser
product "

thats just my2¢
--
'Key
=====

>
> "'Key" wrote in message
>
>> "Bob Drake" wrote in message
>>
>>> Last week I finally got around to getting nitrogen in my
>>> tires for the C-5 with Michelin ZP run flats. Cost $18.
>>> With air, the tire pressure would go up about 5 lbs. on
>>> hot roads. Nitrogen keeps pressure constant (does not
>>> expand as much) and has larger molecules so it can't
>>> leak through the sidewalls over time.
>>>
>>> Bob "BLUE C5" Virginia
>>
>> tire pressure has always gone up about 5 lbs. on hot
>> roads.
>> hasn't damaged a tire yet.
>> for an $18.00 savings.
>> I don't mind checking my tires once a month or so.
>> (needs to be done anyway)
>>
>> sounds to me like an over priced poser product
>>
>> my2¢
>> --
>> 'Key
>> =====
>>
>>
 >> Stay informed about: Nitrogen in the Tires 

I don't think clearing the line is good enough. I have a filter on my air
compressor, but that too isn't good enough. I still get 5-6 lbs increased
pressure on my Michelin ZPs - Goodyears were less - not bad enough to do
anything about. An air dryer on my compressor would probably work as well
as nitrogen I suppose.

"Dale" wrote in message

> On or about Wed, 04 Jun 2008 12:49:57 GMT, "Bob Drake"
> wrote or did cause to be written:
>
>>Last week I finally got around to getting nitrogen in my tires for the C-5
>>with Michelin ZP run flats. Cost $18. With air, the tire pressure would
>>go
>>up about 5 lbs. on hot roads. Nitrogen keeps pressure constant (does not
>>expand as much) and has larger molecules so it can't leak through the
>>sidewalls over time.
>>
>>Bob "BLUE C5" Virginia
> For $18 I've got some magnets you could put on your gas line and get
> 200mpg. Or you could make a down payment on a hydrogen generator that
> will turn 1/2 a cup of water into an extra 25mpg per tank. Nitrogen is
> just another version of these same scams.
>
> Water is the culprit, not the other 22% oxygen and misc. gasses. Water
> expands 1100 times going from liquid to vapor. If you just compress
> normal air in the summer you are going to get some liquid droplets.
> Put those into a tire and as the tire warms some of that liquid turns
> to vapor and the pressure rises. But nitrogen expands exactly the same
> as dry air. Neither nitrogen nor dry air leaks any significant amount
> through a well maintained tire. By the time you have a leak it doesn't
> really matter what the gas leaking is, the hole is large enough for
> anything to leak.
>
> I fill my tires in the winter when the air is dry. When summer comes I
> let a little out to maintain the recommended cold pressure. If I ever
> do need to add air to a tire I make sure I blow some air through the
> hose first to remove the easy to remove moisture. My pressure varies a
> couple of pounds from cold to warm the same way yours does but I have
> $18 dollars in my pocket who's extra weight slows me down so all other
> things being equal, you probably have the faster car.
 >> Stay informed about: Nitrogen in the Tires 

"Bob Drake" wrote in message

>I don't think clearing the line is good enough. I have a filter on
>my air compressor, but that too isn't good enough. I still get 5-6
>lbs increased pressure on my Michelin ZPs - Goodyears were less - not
>bad enough to do anything about. An air dryer on my compressor would
>probably work as well as nitrogen I suppose.
>
Don't worry about it Bob, some will think everything is a scam, in
this case it does what it is supposed to. Keeps the tires at a more
uniform running condition with less fuel usage than if they were
running at a low pressure. Not a lot of savings but it is a savings
and with a few more tweaks it can be noticeable. Take a look at how
they have made the cars as slippery as they can, aerodynamic outside
mirrors, flush mounted windshields, door handles are now flush with
the exterior, lower profiles, radial tires for less roll resistance,
and even the lowly wiper arm is out of the wind stream.

If you get anything that is noticeable with the change please let us
know.

--
Dad
05 C6 Silver/Red 6spd Z51
72 Shark Black/Black/4spd
64 Red/red/white top/4spd
 >> Stay informed about: Nitrogen in the Tires 

Feedback on Nitrogen in C5 Michelin Runflats.

I just finished a 1,000 mile trip to New England and back. It was 95
degrees on the highway coming back. The tires are 32 psig cold and went up
to 36 psig at 70 mph. Only one lb difference with nitrogen over air.
Mileage was the same at 70 mph cruising - 6 speed convertible.: 33.1 by the
DIC and 32.1 by odometer miles divided by gallons in tank.

I think I will replenish the tires, if they go low, with air in the future.

Bob Drake


"Dad" wrote in message

>
> "Bob Drake" wrote in message
>
>>I don't think clearing the line is good enough. I have a filter on my air
>>compressor, but that too isn't good enough. I still get 5-6 lbs increased
>>pressure on my Michelin ZPs - Goodyears were less - not bad enough to do
>>anything about. An air dryer on my compressor would probably work as well
>>as nitrogen I suppose.
>>
> Don't worry about it Bob, some will think everything is a scam, in this
> case it does what it is supposed to. Keeps the tires at a more uniform
> running condition with less fuel usage than if they were running at a low
> pressure. Not a lot of savings but it is a savings and with a few more
> tweaks it can be noticeable. Take a look at how they have made the cars as
> slippery as they can, aerodynamic outside mirrors, flush mounted
> windshields, door handles are now flush with the exterior, lower profiles,
> radial tires for less roll resistance, and even the lowly wiper arm is out
> of the wind stream.
>
> If you get anything that is noticeable with the change please let us know.
>
> --
> Dad
> 05 C6 Silver/Red 6spd Z51
> 72 Shark Black/Black/4spd
> 64 Red/red/white top/4spd
 >> Stay informed about: Nitrogen in the Tires 

Bob Drake wrote:
> Last week I finally got around to getting nitrogen in my tires for the
> C-5 with Michelin ZP run flats. Cost $18. With air, the tire pressure
> would go up about 5 lbs. on hot roads. Nitrogen keeps pressure constant
> (does not expand as much) and has larger molecules so it can't leak
> through the sidewalls over time.
>
> Bob "BLUE C5" Virginia

Dry nitrogen is for braked airplane tires that
see wide temperature variations and it's good
stuff to pre-charge hydraulic accumulators (to
avoid rust).

We can bottom out an accumulator before we
charge it with dry nitrogen.

How does the average tire dealer evacuate *all*
the air and moisture from the tire casing before
charging it with Nitrogen?

On the surface it sounds like "feel-good" snake oil.
--
pj
 >> Stay informed about: Nitrogen in the Tires 

>
> How does the average tire dealer evacuate *all* the air and moisture from
> the tire casing before charging it with Nitrogen?
>
> On the surface it sounds like "feel-good" snake oil.
> --

Worked in a Martin Oil station in the 60's. We were selling it then for ten
cents a tire:)

Al
 >> Stay informed about: Nitrogen in the Tires 

Big Al wrote:
>> How does the average tire dealer evacuate *all* the air and moisture from
>> the tire casing before charging it with Nitrogen?
>>
>> On the surface it sounds like "feel-good" snake oil.
>> --
>
> Worked in a Martin Oil station in the 60's. We were selling it then for ten
> cents a tire:)
>
> Al
>
>

And gas was 20 cents a gallon. How time flies!
 >> Stay informed about: Nitrogen in the Tires 

"Bob I" wrote in message

>
>
> Big Al wrote:
>>> How does the average tire dealer evacuate *all* the air and moisture
>>> from the tire casing before charging it with Nitrogen?
>>>
>>> On the surface it sounds like "feel-good" snake oil.
>>> --
>>
>> Worked in a Martin Oil station in the 60's. We were selling it then for
>> ten cents a tire:)
>>
>> Al
>
> And gas was 20 cents a gallon. How time flies!

I remember 16.9 in St. Louis around 1964 and about two years later in
Florida. Lowest I remember. Can very vividly remember the first time I put
$5.00 worth of gas in a car. And it was a Pontiac with a 20+ gallon tank.

Hung around a gas station in St. Louis at Fyler and Kingshighway named Culp
Oil. If you filled up, they gave you a case of Pepsi free. Gas was around 17
or 18 cents a gallon. And the Pepsi was in bottles in a wood case. Guess
that just makes me old.

Speaking of prices, anyone remember when you could buy two White Castle
hamburgers for 15 cents?

Al
 >> Stay informed about: Nitrogen in the Tires